Projectiles

Doing some Physics revision, and this naturally came up,  looking at how to determine g, projectiles, their range and time of flight. Some excellent ideas from the students on how to stop the shelling.

Using the Ultrasonic sensor to get displacement and velocity Time graphs

 Using the Pasco wireless motion sensor the students acted as a human trolley walking away from the sensor stopping and then returning. Then before we looked at the velocity time graph they had to draw what the graph would look like.

Centre of Mass

 Looking at a broom to find the centre of mass. Its a simple trick to do. Hold out the broom horizontally balanced on two fingers. Move the hands together slowly and often you find one hand moves and the other doesn't when the hands meet - that'
s the centre of mass.

We find the centre of mass to help balance things like getting a picture straight on a wall and we use this idea of centre of mass to stop things blowing over because they are "top heavy".

Van de Graaff generator

Using the Van de Graaff generator is probably one of the most iconic experiments in Physics. Had a lot of fun playing with this and explaining what and why it is happening.

Waves and their properties

 Looking at moving a Ping pong ball using sound waves from one tuning fork on one resonance box to another.

Centre of Mass

Now the students know why I have a hanging basket hanging in my classroom. They walk under it every day and never say anything until we do Centre of mass.

Osmosis

 Looking at the properties of Visking Tubing, The students looked at how it can be used in dialysis using counter flow theory and designing their own dialysis machines.